Note
Before checking parts for malfunctions, check that the audio system operates normally.
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.
Tech Tips
Removing dealer installed options and optional components before performing diagnosis makes it easier to determine the location of a malfunction.
| Symptom | Suspected Area | Link |
|---|---|---|
| Muffled engine sounds in cabin | Proceed to "Power Source Circuit" | |
| Proceed to "Input / Output Signal Circuit" | ||
| No. 1 speaker with box assembly LH | ||
| No. 1 speaker with box assembly RH | ||
| No. 3 speaker with box assembly | ||
| Harness or connector | - | |
| Stereo component equalizer assembly | ||
| Stereo component amplifier assembly | ||
| Abnormal noise from speakers | No. 1 speaker with box assembly LH | |
| No. 1 speaker with box assembly RH | ||
| No. 3 speaker with box assembly | ||
| Harness or connector | - | |
| Stereo component equalizer assembly | ||
| Stereo component amplifier assembly |